Hi Joshua,
[I'm cc'ing to the MD mailing list]
Joshua writes:
>I've seen mini CD's that are half the size of CD's that play in cd =
>players. If I took off the casing of the MD, would I be able to play =
>the CD in a regular CD player. If not, is it because the size is =
>different, or the compatibility?
It's an interesting question. There would be multiple problems trying
to play a bare MD in a CD player:
1) Physical Disc Diameter:
Mini-CD (hereafter "MCD") = 80mm
MD = 64mm
2) Lead-in diameter (where the data starts on the disc):
MCD/CD lead-in = 46mm
MD lead-in = 29mm
3) Chucking mechanism:
MCD/CD = 15mm chucking hole
MD = magnetic clamping through steel plate on MD (with alignment hole)
4) Recording system:
MCD/CD = PIT/LAND
MD = PIT/LAND for pre-recorded, Magneto-Optical for recordable
5) Encoding:
MCD/CD = PCM, MP3, WMA, etc.
MD = ATRAC, ATRAC3
The MD and CD track pitch and optical parameters (spot size) are the
same however.
Rick
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